PPC won’t hurt, it’ll help you out and show your products to more customers. It’ll be a nice way of giving your new bundles/PL a boost then once you get the ball rolling, you can turn it off or reduce the budget on it.
It’s really tough to compete with Amazon..they don’t share the buy box like any other seller would. The bundles sound like a good plan. Maybe try running an auto campaign for a couple bucks a day and see how it goes. Good luck!